Belgium



( No Model.)

2 SheetsSheet 1.

J; B. LOQUET & J. B. KETELAIR. STEAM GENERATOR.

No. 605,495. Patentd June 14,1898Q (No Model.)

2 SheetsSheet 2.

J. B. LOQUET & J. B. KETELAIR;

STEAM GENERATOR.

No. 605,495. Patented June 14,189

JEAN BAPTISTE LOQUET AND JEAN BAPTISTE KETELAIR, OF ANTWERP Arr/r rnicniBELGIUM.

STEAIVI -GENERATOR.

SPECIFICATION forming part of Letters Patent No. 605,495, dated June 14,1898.

Application filed June 8, 1897. $erial 110,689,889. (1101110691.)Patented in Belgium May 28, 1896, No. 121,612; in Eng land May 29,1896,No. 11,738 i in France June 18, 1896,1To. 257,322; in Hungary September23, 1896, No. 7,504, and in Austria February 27, 1897, No- 47/615.

T0 CLZZ whom it may concern:

Be it known that we, J EAN BAPTISTE LooUET and JEAN BAPTIsTE KETELAIR,subjects of the King of Belgium, residing at Antwerp, Belgium, haveinvented certain new and use ful Improvements in or Relating to Steam-Generators, (for which we made application in Belgium, No. 121,612,dated May 28, 1896; in France, No. 257,322, dated June 18, 1896; inGreat Britain, No.11,733, dated May 29, 1896; in Austria, No. 47/615,filed September 23, 1896, granted February 27, 1897, and in I-Iungary,No. 7,501, dated September 23, 1896,) of which the following is aspecification.

This invention relates to steam generators or boilers which ofier greatadvantages as compared with boilers used hitherto by reason of theirproviding a much quicker and more economical vaporization of water. i

A steam-generator according to the present invention is represented inthe accompanying drawings, in which 7 a Figure 1 is a longitudinalsection, the arrangement inside being shown in elevation.

Fig. 2 is a front view, and Fig. 3 a back view, of the steam-generator.

The distinguishing features of the new steam-generator consist of afurnace-chamber A, made in one with the outer boilershell B, in themanner shown in'Fig. 2, and a combustion-chamber 0, arranged in the interior of ,the cylindrical body of the boiler in such a manner as to haveits outer surface entirely surrounded by water. In thiscombustion-chamber, which is supported by suit able cross-stays D, takesplace the first deflection of the flames, which pass through apreferably oval flue E into a second combustion-chamber F, constructedand arranged like the first one, C. This second combustion-chamber F, inwhich the second deflection of the flames takes place, is connected tothe front plate J of the boiler by stays G, and is accessible through atube 11, closed at the front plate by a manhole cover K. The

chamber F is connected to the furnace-chain:

ber A by a vertical stay L and is in ooInmunication with the smoke-box Mof the chimney N by means of two or more flue-tubes in. 'tudinal staysS, Fig. 1,.and a steam-dome'T,

which are secured to the combustion-chamber F at one end and to the backplate P of the steam-generator at the other.

The tube E, connecting the first and second chambersO and F, terminatesin the latter on the same wall as the tubes 0 O,.connecting thecombustion chamber F with the smoke-box; but the tube E and the tubes 0O intersect, so that the discharge-opening at the tube E into thechamber F is substantially on a higher level than that of the gasoutletopenings of the tubes 0 0. Owing to this arrangement the flames comingout from the tube E are obliged to strike against the front wall of thecombustion-chamber F, and

and products of combustion follow the path indicated by the arrowsbefore escaping through the chimney, these reversals of flow takingplace in the combustion-chambers O and F, which are readilyaccessiblefor clean- The generator is completed by longiand it may further haveany of the usual fittings-such as water-gage,steam-gage,safetyvalve,steam-whistle, and drain-cock-and may be supported on, say, threecast-iron bearers U. E

The shape of the furnace-chamber or fine A, which is of greatimportance, is shown in Figs. 1 and 2. It will beseen that the plateforming the furnace-chamber is bent insuch manner that its twoextremities Vjoin the cylindrical boiler-shell at a distance of, say,fifty centimeters from each other, so that this shell will be continuouswith the wall of the furnace-chamber orflue A. A better utilization ofheat generated in the furnace-chamher and a more practical arrangementof the ash-pit than has hitherto been attainable is thereby attained.All the parts of the boiler are arranged so as not to present anydifficulties in construction or in cleaning and repairing and can bemade of any desired dimensions.

WVe claim 1. In a steam-generator, the combination with the boiler-shellB bent inwardly at its lowest part to form the furnace-chamber A,

of a combustion-chamber arranged toward the back of the boiler and at adistance from the walls thereof adapted to be surrounded by water, acombustion-chamber arranged toward the front of the boiler above thechamher A and in position to be surrounded by water, a tube connectingthe said combustion-chambers, and a tube to conduct products ofcombustion from the front combustion-chainber.

2. In a steam-generator, the combination with the boiler-shell B bentinwardly at its lowest part to form the furnace-chamber A, of acombustion-chamber arranged toward the back of the boiler at a distancefrom the walls thereof adapted to be surrounded by water, acombustion-chamber arranged toward the front of the boiler above thechamher A in position to be surrounded by Water, a tube connecting thetwo combustion-chambers, a smoke-box, and tubes leading from the frontcombustion-chamber to the smokeadapted to be surrounded by water, a tubeE connecting the chambers O and F and entering the latter chamber towardits upper end, and tubes 0 leading from the chamber F, at a point belowthe end of thetube E and crossing the latteras described.

In witness whereofwe have hereto set our hands in the presence of thetwo subscribing witnesses.

=JEAN BAPTI'STE LOQUET.

JEAN BAPTISTE KETELAIR,

Witnesses:

H. TUCK SHERMAN, H. CHRISTIAENSEN.

